30CrNiMo8 | 1.6580 Material Datasheet

Material Test Series Values

Material Standard Values

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Material Description

Material Number	Material Number (single)	Standard	Range of Application	Standard Status	Country	Remark
1.6580 (SEW 550 : 2024-12)	1.6580	SEW 550 : 2024-12	Supersedes SEW 550 : 1976-08	Valid	Germany	Quenched and tempered steel for larger forgings.

Chemical Composition

C [%]	Cr [%]	Mn [%]	Mo [%]	Ni [%]	P [%]	S [%]	Si [%]	Source
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Mechanical Properties

Semi-finished Product	Condition	Nominal Size [mm]	Temperature [°C]	Specimen Direction	Tensile Strength [MPa]	Yield Strength (0.2% offset) [MPa]	Elongation A [%]	Source
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Physical Properties

Temperature [°C]	Density [g/cm³]	Young's Modulus [GPa]	Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1]	Differential Coefficient of Thermal Expansion [10^-6*K^-1]	Thermal Conductivity [W/(m*K)]	Thermal Diffusivity [10^-6 m²/s]	Specific Electrical Resistance [µΩm]	Mean Specific Heat Capacity [kJ/(kg*K)]	True Specific Heat Capacity [kJ/(kg*K)]	Source
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Young's Modulus [GPa] vs Temperature [°C]

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Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] vs Temperature [°C]

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Differential Coefficient of Thermal Expansion [10^-6*K^-1] vs Temperature [°C]

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Toughness Data (Impact)

Semi-finished Product	Condition	Nominal Size [mm]	Temperature [°C]	Specimen Shape	Specimen Direction	Notch Impact Energy [J]	Source
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Cross Reference

Material Name	Country	Standard	Source
30CrNiMo8	Europe	EN 10250-3
SNCM431	Japan	JIS G 4053	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
SNCM431	South Korea	KS D 3867	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
A29 Grade 4340	USA	ASTM A29	SAE HS-1086, ASTM DS56M, Metals & Alloys in the Unified Numbering System, 14th Edition, SAE International, 2023
A434 Grade 4340	USA	ASTM A434	SAE HS-1086, ASTM DS56M, Metals & Alloys in the Unified Numbering System, 14th Edition, SAE International, 2023
Grade 4340	USA	SAE	SAE HS-1086, ASTM DS56M, Metals & Alloys in the Unified Numbering System, 14th Edition, SAE International, 2023
G43400	USA	UNS	SAE HS-1086, ASTM DS56M, Metals & Alloys in the Unified Numbering System, 14th Edition, SAE International, 2023
30 NiCrMo 8	Germany		Stahlschlüssel 1980, Verlag Stahlschlüssel Wegst GmbH, Marbach

Producer/Supplier/Trade names

Tradename	Supplier	Source
836 J	Aubert&Duval Special Steel GmbH, Mönchengladbach	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
BGH 6580	BGH Edelstahl Siegen GmbH	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
Firmodur 6580	Deutsche Edelstahlwerke Specialty Steel GmbH & Co. KG, Witten	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
30CrNiMo8	Schmiedewerke Gröditz GmbH, Gröditz	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
BÖHLER V145	voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach
V145	voestalpine High Perfomance Metals Deutschland GmbH, Düsseldorf	Stahlschlüssel 2019, Verlag Stahlschlüssel Wegst GmbH, Marbach

FKM Guideline Fatigue Strength

Condition	Temperature [°C]	Tensile Strength [MPa]	Yield Strength [MPa]	Fatigue Limit under rev. Tension-Compression Stresses [MPa]	Fatigue Strength under pulsating Tensile Stresses [MPa]	Bending Fatigue Strength [MPa]	Shear Fatigue Strength [MPa]	Torsion Fatigue Strength [MPa]	Source	Remark
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Fracture Toughness

Temperature [°C]	Plane-Strain Fracture Toughness KIc [MPa*m^½]	Source
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30CrNiMo8 | 1.6580 Material Datasheet

Material Test Series Values

Material Standard Values

Material Description

Chemical Composition

Mechanical Properties

Physical Properties

Young's Modulus [GPa] vs Temperature [°C]

Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1] vs Temperature [°C]

Differential Coefficient of Thermal Expansion [10^-6*K^-1] vs Temperature [°C]

Toughness Data (Impact)

Cross Reference

Producer/Supplier/Trade names

FKM Guideline Fatigue Strength

Fracture Toughness

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